There's a movie and soundtrack details as well.
Nintendo's first big jump into the music game genre is in the form of a conga drum game. The newly opened game page reveals quite a lot of information about what can be expected from this game.
The game features over 30 songs from a variety of Japanese sources, such as anime soundtracks, TV and commercial music, as well as sounds straight from videogames. Also included are songs that you'd expect to see in a conga-drum game, like Mambo No.5.
The site also has a movie up illustrating how the game works. (The movie can be found here.) The drum controller plugs into the GameCube. Symbols scroll across the screen prompting you to hit the left or right pad, both pads, or clap above the pads in tune with the music.
The game can be played with four players with four sets of drums, and will be available in Japan on December 12.